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Date: Mon, 09 Oct 2000 11:36:50 +0900
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From: Hori Masato <mho@pobox.com>
To: doc-jp@jp.freebsd.org
In-Reply-To: In your message of "Sun, 8 Oct 2000 21:45:52 +0900 "
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Subject: [doc-jp 7750] Re: ANNOUNCE: FreeBSD Security Advisory: FreeBSD-SA	-00:52.tcp-iss
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$B$$$D$b$4$/$m$&$5$^$G$9!#(B

$BGX7J$N$H$3$m$J$N$G$9$,!"(B

At Sun, 8 Oct 2000 21:45:52 +0900 ,
Hiroki Sato <hrs@eos.ocn.ne.jp> wrote:
> I.   $BGX7J(B - Background
> 
> TCP network connections use an initial sequence number as part of the
> connection handshaking. According to the TCP protocol, an
> acknowledgement packet from a remote host with the correct sequence
> number is trusted to come from the remote system with which an
> incoming connection is being established, and the connection is
> established.

> TCP $B$N%M%C%H%o!<%/@\B3$K$O(B, $B@\B3$N%O%s%I%7%'%$%/$r9T$J$&:]$K(B
> $B=i4|%7!<%1%s%9HV9f$,;H$o$l$^$9(B.  $BI8=`(B TCP $B%W%m%H%3%k$K$h$k$H(B,

$B$3$3$N!VI8=`!W$H$$$&$N$O$J$/$F$b$$$$$+$b!#(B

> $B30$+$i$N@\B3$r3NN)$7$h$&$H$7$F$$$k%j%b!<%H%[%9%H$+$i(B
> $B@5$7$$%7!<%1%s%9HV9f$NIU$$$?3NG'%Q%1%C%H(B(acknowledgement packet)$B$,(B
> $BAw$i$l$F$/$k$3$H$,A[Dj$5$l$F$*$j(B, 

$B@5$7$$%7!<%1%s%9HV9f$NIU$$$?3NG'%Q%1%C%H(B(acknowledgement packet)$B$O@\B3(B
$B$r3NN)$7$h$&$H$7$F$$$k%j%b!<%H%[%9%H$+$iMh$?$b$N$H$5$l!"(B

> $B@\B3$O$=$N3NG'%Q%1%C%H$NE~Ce$K(B
> $B$h$C$F3NN)$5$l$k$H$5$l$F$$$^$9(B.

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$B$[$j!!$^$5$H(B
